1641215244 has 24 divisors (see below), whose sum is σ = 3838399488. Its totient is φ = 545800720.

The previous prime is 1641215243. The next prime is 1641215267. The reversal of 1641215244 is 4425121461.

It is not an unprimeable number, because it can be changed into a prime (1641215243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153492 + ... + 163835.

It is an arithmetic number, because the mean of its divisors is an integer number (159933312).

Almost surely, 2^1641215244 is an apocalyptic number.

It is an amenable number.

1641215244 is an abundant number, since it is smaller than the sum of its proper divisors (2197184244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1641215244 is a wasteful number, since it uses less digits than its factorization.

1641215244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317765 (or 317763 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 1641215244 is about 40511.9148399579. The cubic root of 1641215244 is about 1179.5649176415.

The spelling of 1641215244 in words is "one billion, six hundred forty-one million, two hundred fifteen thousand, two hundred forty-four".